Solving Trigonometry Problem: sin θ / √1-sin^2 θ

[luigihs]

1. sin θ / √1-sin^2 θ



I don't know this, I know sin = 1 / csc but I not sure how to do this problem :( I don't know about the √1-sin^2 θ

 

[BloodyFrozen]

Try using:

$$sin^{2}\theta+cos^{2}\theta=1$$

 

[luigihs]

Try using:

$$sin^{2}\theta+cos^{2}\theta=1$$

I don't understand that sorry can you explain for me? please

 

[Mark44]

luigihs,
BloodyFrozen has given you a good hint. It is up to you to use the hint. It is against Physics Forums policy to do the work for posters.

 

[luigihs]

But i don't even know how to use that formula how i am suppose to answer that problem ?? what is that ?? for me is just a formula .. but I am guessing maybe is not a formula

 

[micromass]

But i don't even know how to use that formula how i am suppose to answer that problem ?? what is that ?? for me is just a formula .. but I am guessing maybe is not a formula

That is the most important formula of entire trigonometry. If you don't know that formula, then I suggest you review your course. There is nothing else we can do for you.

 

[BloodyFrozen]

How are you already simplifying (simple) expressions when you don't know the most basic one? As for my original hint, see if you can get $sin^{2}\theta+cos^{2}\theta=1$ to match a part of the expression that you are trying to simplify.